In recent years, the most common kind of cybercrime has been phishing, a form of online fraud. In phishing, an attacker, masquerading as a trusted entity, dupes a victim into opening an email, instant message, or text, and then clicking a malicious link, triggering undesirable processes such as malware installation or a system freeze as part of a ransomware attack. Phishing attacks, which often evade spam filters and other cybersecurity tools, have resulted in billions of dollars of losses for individuals and organizations.